/Engine/Source/Runtime/UMG/Public/Blueprint/WidgetBlueprintLibrary.h
An event should returnFReply::Handled().EndDragDrop()to request that the current drag/drop operation be terminated.
static [FEventReply](API\Runtime\UMG\Components\FEventReply) EndDragDrop ( [FEventReply](API\Runtime\UMG\Components\FEventReply) & Reply )